Saw-filing machine.



A. ROSS.

SAW FILING MACHINE. APPLIGAT ION FILED JAN.13, 1912.

1,059,909, Patented Apr. 22, 1913.

3 SHBETSSHEET 1.

A. ROSS. I SAW FILING MACHINE. APPLIGATION FILED JAN. 13, 1912.

1,059,909. Patented Apr. 22, 1913.

3 SHEETS-SHEET 2.

. SIM-m COLUMBlA PLANQm'zAPn coqwAsnmuToN. D. c.

A. ROSS.

SAW FILING MACHINE.

, APPLICATION FILED JAN. 13, 1912.

1,059,909.. Patented Apr. 22, 1913.

3 SHEETS-SHEET 3.

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alto Mau COLUMBIA PLANOURAPH c0 WASHINGTON. D. C.

ioaaaoa ALBERT ROSS, OF CARTHAGE, TEXAS.

SAW-FILING MACHINE.

Specification of Letters Patent.

Patented Apr. 22, 1913.

App1ication filed January 13, 1912. Serial No. 670,979.

To all whom it may concern Be it known that I, ALBERT Ross, a citizen ofthe United States of America, residing at Carthage, in the county ofPanola and State of Texas, have invented new and useful Improvements inSaw-Filing Machines, of which the following is a specification.

The invention relates to improvements in saw filing machines, and moreparticularly to machines for sharpening gin and linter saws.

The primary object of the present invention is to provide a saw filingmachine of this character which shall be entirely automatic in operationand upon receiving its initial start, will automatically file all theteeth of every saw, and upon the completion of the sharpening operationof one saw, will automatically move into engagement with the teeth ofthe next saw to be sharpened, continuing this operation until thesharpening operation of all the saws is completed.

Another object of the invention is to provide a saw sharpening machine,the sharpening or file-carrying mechanism of which shall beautomatically lifted out of engagement with the teeth of one saw andmoved into engagement with the teeth of the next saw, subsequent towhich the sharpening mechanism is rendered immovable for travel from onesaw to another and put into operation for the sharpening of the sawteeth.

To these ends the invention comprehends a support upon which the saws tobe sharpened are held and a horizontally movable carriage orfile-carrying mechanism, the file supporting arms of which are pivotedfor swinging movement so that the same may be moved into and out ofengagement with the teeth of the saws to be sharpened, the operatingmechanism for the file carriage comprising, for this purpose, anautomatically actuated shaft, upon one end of which is mounted a throwlever designed to be rendered operative and inoperative automatically bymeans of the driving mechanism of the machine, which latter is common tothe mandrel, file carrying carriage and the mechanism for moving thecarriage horizontally of the machine, as before stated.

\Vith the above and other objects in view the invention consists in theconstruction, combination and arrangement of parts hereinafter set forthand falling within the scope of the appended claims, it being understoodthat such changes may be made as fairly fall within the scope of theclaims, appended hereto, without departing from the spirit of theinvention or sacrificing any advantages thereof.

In the accompanying drawings forming a portion of this specification;Figure 1 is a top plan view of a machine constructed in accordance withthe present invention. Fig. 2 is an end elevation of the same. Fig. 3 isa transverse section on the line 33 of Fig. 1. Fig. 4 is a transversesection on the line M of Fig. 1. Fig. 5 is a transverse section on theline 55 of Fig. 1, parts being broken away to show the carriageoperating mechanism. Fig. 6 is a longitudinal sectional view on the line66 of Fig. 1. Fig. 7 is a detail perspective view of the file carriage,and Fig. 8 represents a detail of the machine.

Similar reference characters designate like )arts throughout thedrawings.

Re erring more particularly to the accompanying drawings wherein I haveillustrated the preferred form of my invention A designates thesupporting frame of the machine including longitudinal and transversebars 1 and 2 respectively, the former being provided with guide waysdesigned to facilitate the travel of the file carrying carriage B in theoperation of the machine. Forwardly of the supporting frame A andconnected thereto in any suitable manner are hangers 3 upon which thesaw mandrel l is mounted and carries gin saws 5 to support the latterduring the sharpening operation of the saws. Projecting rearwardly fromthe transverse bars 2 of the frame A and preferably formed integraltherewith are bearings 6, 6 in which is mounted for rotary movement themain driving shaft 7.

Mounted upon the shaft 7 are fast and loose pulleys 8 and 9 respectivelyover which a belt is designed to travel to impart operative movement tothe mechanism. The loose pulley 9 is preferably keyed to a clutch sleeve11 loosely encircling the shaft 7 at one end of the latter andconsisting of the male and female members 10 and 11 respectively, thesleeve being journaled in the bearing 6 adjacent this end of the drivingshaft, the purpose of which will appear later. At its opposite end theshaft 7, ex-

teriorly of the other bearing 6, has fixed thereto a pinion 12 designedto mesh with a gear 13 journaled upon a stub shaft 14 mounted in thetransverse bar 2 and for wardly of the shaft 7. The gear 13 carries acrank pin 15 to which is pivotally connected one end of a lever 16, theopposite end of said lever being pivotally connected to a dog 17slidably mounted in a bearing 18, ar' ranged upon the bar 2, and adaptedto engage a ratchet wheel 19 secured rigidly upon one end of a mandrelreceiving shank 4: r0- tatably mounted in a bearing 5 extendingforwardly of one of the transverse bars 2 and preferably formed integraltherewith as shown, the opposite end of the mandrel receiving shankbeing formed with a socket 6' adapted to receive one end of the sawmandrel 4 for rotating the latter so that the said mandrel may receiveits driving power from the main shaft 7 and be rotated in a step by stepmanner as will be readily understood. Although I have described thisform of mechanism for driving the saw mandrel I desire it to beunderstood, and it will be readily obvious, that any other form ofmechanism may be employed to obtain the desired end.

Adjacent the last named bearing 6, the shaft 7 is provided with aneccentric or other form of motion converting device-2O which isoperatively connected with the rear end of the file carrying carriage Bfor imparting reciprocatory motion tothe same so that the files may beoperated to sharpen the saw teeth. The carriage B comprises front andrear plates 21 and 22 respectively adapted to travel in the guide waysof the longitudinal bars 1 of the frame A, and file carrying arms 23,each of which comprises an arm 24 having its rear end rigidly secured tothe rear plate 22 of the carriage. The

forward ends of the arms 24 are each piv- I otally connected at 25 to afile holder 26. Into these holders 26 the files 27 are secured and heldin their operative position, the holders at the same time beingpermitted to slide freely within the forward plate 21. Adjacent theirpivotal connections with the arms 24, the file holders 26 are providedwith depending slotted lugs 27 for the purpose of receiving a liftingshaft 28.

The lifting shaft 28 is journaled in suitable bearings 29 supported bythe transverse bars 2 of the frame A. The bearings 29 are provided witheccentrics suitably fastened to the opposite ends of the shaft 28. Theshaft 28, preferably exteriorly of one of the transverse bars 2, hasfixed thereto what I term a throw lever 30 having a long arm 31 and ashort arm 82, the latter being at an angle to the arm 31 and is providedwith a depression 33, the depression providing a shoulder 3-1 thepurpose of which will hereinafter appear.

The numeral 35 designates a gear wheel journaled upon a stubshaftcarried by the side bar 2 and arranged rearwardly of and adjacent. thepoint of connection of the throw lever 30 and the shaft 28. This gearWheel is provided upon its inner side with lugs 37, one of the lugsbeing arranged near the center of the wheel and the other adjacent theperiphery thereof for the purpose of alternately engaging the ends ofthe lever 30 so as to rock the same and consequently the shaft 28 in itsbearings, the eccentricity of the bearings permitting the shaft to beraised and lowered and impart a similar motion to the file holders 26through the medium of the depending slotted lugs 27 so as to bring thefiles into and out of engagement with the saws. On its outer surface andadjacent its peripheral edge the gear wheel 35 is provided with a seriesof pins 88 which are suitably mounted at equal distances apart upon aportion of the circumference of the wheel, and are designed to engage asprocket or star wheel 39 arranged upon one end of a short shaft 450journaled in one side bar 2 of the frame and parallel with the shaft 40is a screw shaft 1-1 provided, adjacent one end, with a sprocket 12designed to receive an endless operating chain A3 which latter is drivenby a sprocket 14 keyed to the shaft 10 and in alinement with thesprocket 42 of the shaft 11. The arms 24 of the carriage B arepreferably provided with a split nut adapted to freely engage the shaft41 so that in the movement of the shaft A1, as will be hereinafterdescribed, the carriage B may be moved longitudinally of the frame ofthe machine so as to bring the files into alinement with the saws in thesharpening operation. Keyed upon the free end of the female member 11 ofthe sleeve 11 is a pinion 45 designed to mesh with the gear wheel 35 andreceiving its motion from the pulley 9 carried by the opposite'end ofthe sleeve.

For the purpose of shifting the belt 10 from the pulley 8 to the pulley9 a suitable shift mechanism is provided and operated at the completionof each and every revolution of the mandrel l. This mechanism preferablycomprises a trip 4E6 keyed to the mandrel receiving shank 4 and adaptedto engage one end of a release lever 47 which latter is pivotallymounted upon one of the side bars 2 of the machine. The opposite or freeend of the release lever 47 is designed to engage a cut out portion of abelt shifter rod 4L8 slidably mounted in suitable bearings 49 carried.by one of the longitudinal bars 1. tion of the rod l8 forms a latch andis normally engaged by the release lever l7 to hold the shifter rodagainst the tension of the retractile spring 50,. one end of which isfastened to the rod 48 and the opposite end to the longitudinal bar 1 asplearly illus- This grooved .or cut out portrated in Fig. 1 of thedrawings. In this position of the rod 48 the belt 10 is held upon thefast pulley 8 thereby permitting the driving of the shaft 7 toreciprocate the file carriage B and rotate the saw mandrel 4. l/Vhen themandrel 4 has completed one revolution the trip 46 operates the releaselever 47 and causes the same to disengage the rod 48, at which time thespring 50 actuates the belt shifter rod to carry the belt from thepulley 8 to the pulley 9, the latter operation permitting the pinion 45to be driven through the medium of the sleeve 11 and consequently thegear 35. In the movement of the gear wheel 35 the inner one of the lugs37 engages the short arm 32 of the throw lever 30 and riding into thedepression 33 engages the shoulder 34 thereof and rocks the shaft 28 toraise the file holders thus lifting the files from the saws. Immediatelysucceeding this operation the pins 38 of the gear wheel 35 engage thestar wheel 39 and rotate the shaft 40, the latter transmitting itsmotion through the chain 43 and sprockets 42 and 44 and the screw shaft41, the latter operating the carriage to move the files to the next sawto be sharpened. The operation of the screw shaft 41 will be checked atthis point due to the pins 38 being arranged only upon a portion of thecircumference of the gear wheel 35. Subsequent to the above movement ofthe carriage the long arm 31 of the throw lever 30 is engaged by theouter lug on the gear 35, thereby operating the shaft 28 to bring thefiles into engagement with the teeth of the saws.

For the purpose of returning the belt 10 to the fast pulley 8 so thatthe reciprocatory movement of the files and the rotary movement of themandrel 4 may be renewed, I provide a suitable mechanism for returningthe belt shifter rod 48 to its position. This mechanism comprises aplunger 51 slidably mounted in one of the cross bars 2 of the supportingframe A and normally held in retracted position by means of a retractilespring 52 which latter encircles the plunger rod intermediate the crossbar 2 and the head of the plunger. The gear wheel 35 has arranged uponits inner surface a cam or inclined track section 53, designed to engagethe free terminal of the plunger rod to operate the plunger against theaction of the spring 52 to engage the belt shifter rod 48 and return thesame to its normal position so that the sharpening operation of themachine may be continued. The plunger is operated as above describedsimultaneously with the return of the file holders for engagement withthe saw teeth, immediately after which action the machine is put intooperation as above described for sharpening purposes.

To prevent accidental movement of the gear wheel 35 after the files havebeen returned to the saws for sharpening purposes, or to preventpremature operation of the gear wheel, the inner end of the plunger 51is designed to engage a yieldable dog 53 arranged upon the inner surfaceof the gear wheel 35 at a point adjacent the cam or inclined tracksection 53, thus preventing further movement of the gear wheel 35following the shifting of the belt from the pulley 9 to the pulley 8,the yieldable end of the dog 53 serving to permit movement of the gearwheel 35 under the action of the pin ion 45 in the shifting of thecarriage.

To insure the safety of the machine in the absence of the operator andto facilitate the operation of stopping and starting the machine at thewill of the operator without shutting off the power, as in the event ofchanging files or for other purposes, the machine is equipped with asafety stop by which connection between the male and female members ofthe clutch lever 11 may be severed, permitting the loose pulley to idle.This mechanism embodies a latch or releasing device which is operable bythe carriage, upon the same reaching its limit of movement relatively tothe machine in either direction, to separate the clutch members torender the loose pulley inoperative. More specifically this mechanismconsists of a substantially U-shaped lever 54 pivoted to the machineframe as at 55 and having one arm 56 thereof rigidly secured to thefemale member 11" of the clutch sleeve. The opposite arm 57 of this U-shaped lever is designed to be engaged by a spring latch 58 fixed to themachine frame and provided with a stop lug 59. The latch 58 projectsinwardly of the frame and is operatively engaged on its under surface bya lever 59 pivoted to the rear longitudinal bar 1 of the machine frame.The lower end of the lever 59 is pivotally connected to one end of anactuating rod 60, the free end of which terminates in an upstandingprojection 61 arranged at the opposite end of the machine, the lever andthe upstanding projection 61 being positioned in the path of movement ofthe carriage and at the limit thereof. The arm 57 has connected theretoone end of a retractile spring 62, the opposite end of which is securedto one of the standards of the machine frame A. The rear plate 22 of thecarriage is provided with oppositely disposed lateral projections 63 and64 designed to engage the lever 59 and the upstanding projection 61respectively, in the movement of the carriage. From this construction itwill be seen that upon the carriage reaching its limit of movement ineither direction, the projections 63 and64 will engage the members 59and 61 to raise the latch 58 thereby releasing the arm 57 of theU-shaped lever 54 from ening projection 61 at the same time serving asan operating handle whereby the file carriage may be stopped in itsmovement to facilitate the changing of the files or for other purposes.Upon the release of the arm 57 the spring 62 operates to disengage theclutch members through the medium of the lever 54, which latter rocksupon its pivot 55.

From the above description taken in connection with the drawings it willbe seen that I have provided a machine which is entirely automatic inits action and in which the saw support remains stationary, therebydoing away with the complicated mechanism necessary to move the sawmandrel to permit the sliding movement of the carriage. It will furtherbe seen that my invention embodies a simple and compact mechanism towhich access can be readily had for the purpose of cleaning andrepairing upon the same being necessary.

Having thus described my invention what I claim and desire to secure byLetters- Patent, is:

1. A saw filing machine comprising a frame, means for supporting a sawcarrying mandrel having a plurality of saws thereon, means for rotatingthe mandrel, a carriage mounted on the frame, a filing mechanism 011 thecarriage, an operating mechanism common to the mandrel, carriage andfiling mechanism, and connections between the operating mechanism andthe mandrel, carriage and saw filing mechanism, arranged toautomatically operate upon the completion of each rotative movement ofthe mandrel to lift the filing mechanism out of engagement with thesaws, to then shift the carriage to bring the filing mechanism intoalinement with the adjacent saw and then return the filing mechanism toengage the next saw to be sharpened.

2. A saw filing machine comprising a frame, means for supporting a sawcarrying mandrel. having a plurality of saws thereon, a carriage mountedon the frame and longitudinally slidable thereof, a filing mechanism onthe carriage, driving means common to the mandrel and saw filingmechanism and rotating and reciprocating the same respectively, meansfor sliding the carriage longitudinally of the frame, and means operablefrom said first-named means to lift the filing mechanism out ofengagement with the saws previous to the sliding movement of thecarriage.

8. A saw filing machine comprising a frame, means for supporting a sawcarrying mandrel having a plurality of saws thereon, a carriage mountedon the frame and longitudinally slidable thereof, a filing mechanismmounted on the carriage, means common to the mandrel. and filingmechanism for rotating and reciprocating'the same r'espeetlvely, meansfor sliding the carnage longitudinally of the frame, and a lifting.

eccentrically on the frame and engaging the filing mechanism to lift thesame out of engagement with the saws, a throw lever pivotally connectedto said lifting shaft, and means for operating the throw lever.

5. A saw filing machine comprising a frame, means for supporting a sawcarrying mandrel having a plurality of saws thereon, a carriage mountedon the frame and slid able longitudinally thereon, a filing mechanism onthe carriage, a main driving shaft common to the mandrel and filingmechanism for rotating and reciprocating the same respectively, meansfor sliding the carriage longitudinally of the frame, a lifting barmounted eccentrically on the frame, and engaging the filing mechanism tolift the same out of engagement with the saws, a throw lever pivotallyconnected to said lifting shaft, means for operating the throw lever,-

and a connection between said last-named means and the main drivingshaft.

6. A saw filing machine comprising a frame, means for supporting a sawcarrying mandrel having a plurality of saws thereon, a carriage mountedon the frame and longitudinally slidable thereon, a filing mecha nism onthe carriage, an operating mechanism common to the mandrel and filingmechanism for rotating and reciprocating the same respectively, meansconnected to said operating mechanism for moving the carriagelongitudinally of the frame, and means brought alternately into and outof engagement with said operating mechanism to lift the filing mechanismout of engagement with the saws previous to the longi tudinalmovement-of the carriage.

7. A saw filing machine comprising a frame, means for supporting a sawcarrying mandrel having a plurality of saws thereon, a carriage mountedon the frame and longitudinally slidable thereon, a filing mechanism onthe carriage, an operating mechanism common to the mandrel and filingmechanism for rotating and reciprocating the same respectively, meansconnected to said operating mechanism for moving the carriagelongitudinally of the frame, and means brought alternately into and outof engagement with said operating mechanism to lift the filing mechanismout of engagement with the saws previous to the longitudinal movement ofthe carriage, said lastnamed mechanism including a lifting shaft mountedeccentrically on the frame and in engagement with the filing mechanism,a throw lever connected to said shaft and means for operating the throwlever.

8. A saw filing machine comprising a frame, means for supporting a sawcarrying mandrel having a plurality of saws thereon, a carriage mountedon the frame and longi tudinally slidable thereon, a filing mechanism onthe carriage, an operating mechanism common,to the mandrel and filingmechanism for rotating and reciprocating the same respectively, meansconnected to said operating mechanism for moving the carriagelongitudinally of the frame, and means brought alternately into and outof engagement with said operating mechanism to lift the filing mechanismout of engagement with the saws previous to the longitudinal movement ofthe carriage, said last named mechanism including a lifting shaftmounted eccentrically on the frame and in engagement with the filingmechanism, a throw lever connected to said shaft, means for operatingthe throw lever, a gear wheel provided with a plurality of lugs adaptedto be brought into engagement with said throw lever to raise and lowerthe lifting shaft for the purpose described.

9. A saw filing machine comprising a frame, means for supporting a sawcarrying mandrel having a plurality of saws thereon, a carriage mountedon the frame and longitudinally slidable thereon, a filing mechanism onthe carriage, a driving mechanism common to the mandrel and saw filingmechanism for rotating and reciprocating the same respectively, meansfor lifting the saw filing mechanism into and out of en gagement withthe saws, means connected to said lastnamed means for sliding thecarriage longitudinally of the frame subsequent to the lifting action,and means for shifting the power from said first-named mechanism to thecarriage lifting mechanism, said lastnamed means being operated by thesaw mandrel upon the completion of a revolution of the same, to shiftsaid mechanism.

10. A saw filing machine comprising a frame, means for supporting a sawcarrying mandrel having a plurality of saws thereon, a carriage mountedon the frame and slidable longitudinally thereon, a filing mechanism onthe carriage, an operating mechanism common to the mandrel and sawfiling mechanism to rotate and reciprocate the same respectively, meansoperable from said operating mechanism to move the carriagelongitudinally of the frame, means connected to said last-named meansfor lifting the filing mechanism out of engagement with the sawsprevious to the sliding of the carriage, means for stopping the motionof said operating mechanism previous to the sliding of the carriage andthe lifting of the filing mechanism from the saws, said lastnamed meansincluding a power shifting clevice adapted to be operated by the sawmandrel to check the rotary movement of the mandrel and thereciprocatory movement of the filing mechanism before the carriage andfiling mechanism are rendered inoperative for sharpening purposes, andmeans for returning the power shifting device to its normal positionupon the carriage and saw filing mechanism being rendered operative forsharpening purposes.

11. A saw filing machine comprising a frame, means stationary relativeto the frame for supporting a saw carrying mandrel having a plurality ofsaws thereon, means for rotating the mandrel, a carriage mounted on theframe, a filing mechanism on the carriage, an operating mechanism commonto the mandrel, carriage and filing mechanism, and connections betweenthe operating mechanism and mandrel, carriage and saw filing mechanism,arranged to automatically operate upon the completion of each rotarymovement of the mandrel to move the filing mechanism out of engagementwith the saws, to then shift the carriage to bring the filing mechanisminto alinement with the adjacent saw and then return the filingmechanism to engage the next saw to be sharpened, and means operableautomatically upon the completion of the sharpening operation of thesaws to stop the operation of the machine.

12. A saw filing machine comprising a frame, means stationary relativeto the frame for supporting a saw carrying mandrel having a plurality ofsaws thereon, means for rotating the mandrel, a carriage mounted on theframe, a filing mechanism on the carriage, an operating mechanism commonto the mandrel, carriage and filing mechanism, and connections betweenthe operating mechanism and mandrel, carriage and saw filing mechanism,arranged to automatically operate upon the completion of each rotarymovement of the mandrel to move the filing mechanism out of engagementwith the saws, to then shift the carriage bring the filing mechanisminto alinement with the adjacent saw and then return the filingmechanism to engage the next saw to be sharpened, and means operableautomatically upon the completion of the sharpening operation of thesaws to stop the op eration of the machine independently of the drivingpower of the machine.

13. A saw filing machine comprising a frame, means for supporting aplurality of saws, a filing mechanism mounted on the frame and slidablelongitudinally thereof, means for rotating the saws and operating thefiling mechanism, and means operable to lift the filing mechanism out ofengagement With the saws upon the completion of the sharpening of a saw.

14. A saw filing machine comprising a frame, means supporting a sawcarrying mandrel having a plurality of saws thereon, a filing mechanismmounted on the frame and slidable longitudinally thereof and adapted forengagement with the saws, means for moving the filing mechanismlongitudinally of the frame to sharpen the individual saws, means forlifting the filing mechanism out of engagement with the saws previous tothe sliding of such mechanism on the frame, and means for stopping themotion of the last-named means previous to the sliding of the filingmechanism on the frame whereby the filing mechanism may be movedlongitudinally of the frame in its lifted or elevated position.

15. A saw filing machine comprising a frame, means for supporting aplurality of saws, a filing mechanism on the frame and slidablelongitudinally thereof, means for rotating the saws, means for operatingthe filing mechanism to sharpen the saws successively, and meansoperable to lift the filing mechanism out of engagement with the sawsupon the completion of the sharpening of each saw, said means comprisinga shaft, bearings mounted eccentrically on the frame and receiving saidshaft, and means for actuating the shaft and its hearings to elevate thefiling mechanism.

16. A saw filing machine comprising a frame, means for supporting aplurality of saws, a filing mechanism on the frame and slidablelongitudinally thereof, means for rotating the saws, means for operatingthe filing mechanism to sharpen the saws successively, and meansoperable to lift the filing mechanism out of engagement with the sawsupon the completion of the sharpening of each saw, said means comprisinga shaft, bearings mounted eccentrically on the frame and fixed to saidshaft, a throw lever fixed to the shaft, and means for operating saidthrow lever to actuate the shaft and its bearings to elevate the filingmechanism.

In testimony whereof I affix my signature in presence of tWo Witnesses.

ALBERT ROSS.

Witnesses:

A. Esoon, W. T. ALSTON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

